Converting newtons to lbs. per inch

[frankroger]

Is there a way to convert ? I want to compare coil springs that are rated in newtons to springs that are rated in pounds per inch of compression. Any ideas? Thanks for reading this.

[JAlberts]

CORRECTION NOTE: When I stated "spring rate must be stated as force/unit length" in the original below post, that statement should have read "spring rate must be stated as force/unit deflection".

Newtons is a unit of force only and spring rate must be stated as force/unit length; therefore, the metric equivalent of lbs/inch must be newtons/meter or newtons/cm or something of that form. Assuming the metric spring rate is in newtons/cm then straightforward conversions of the units of newtons to lbs and cm to inch should solve your problem.

[frankroger]

Thank you, unfortunately the only spec for this spring is "Newtons".

[JAlberts]

While it does not affect the apparent issue at hand, I mispoke my above entry when I stated "spring rate must be stated as force/unit length". That statement should have read "spring rate must be stated as force/unit deflection".

I apologize for such an obvious error.

[frankroger]

Is stating spring force in newtons/cm the customary way to rate a spring in the metric world?

[JAlberts]

A quick check of suppliers on the internet indicates the standard metric unit for spring rate is Newtons/mm.

[frankroger]

ok, thanks.